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# Tutor profile: Ankit B.

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Ankit B.
IIT Roorkee '19 | Social Entrepreneur | Chemical Engineer
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## Questions

### Subject:Trigonometry

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Question:

If 3Sin(x) + 4Cos(x) = 5 then find Cosec(x)? a. 2/3 b. 3/2 c. 3/5 d. 5/3

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Ankit B.

There are various ways you can attempt this question. The most basic technique to solve this and reach the answer is by converting the equation in terms of a single variable and solving it. Since we are aware of the basic identities relating Sin(x) and Cos(x), and also Sin(x) and Cosec(x), we can convert the equation in a single equation containing Sin(x) and solve the Quadratic equation. But here we can use our presence of mind to solve this quickly given we have the options. Now we all now that Cosec(x) cannot take values between -1 and 1 we can reject option a. and option c. directly. Assuming if Cosec(x) is 3/2, then Sin(x) is 2/3. Hence, by putting the value of Sin(x) in the equation, and also cos(x) in the same equation, we get that the Left Hand Side is not equal to the Right Hand Side. Therefore, the only option left is option d. which is the correct answer.

### Subject:Basic Math

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Question:

Basic Math becomes a part of a lot of Stress Interview situations especially for entry level analyst jobs. I have seen many of my friends and colleague complaining post interviews that they messed up with a simple 3-digit X 2-digit oral multiplication. Consider an example 367 X 63.

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Ankit B.

### Subject:Entrepreneurship

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Question:

What is the most basic mistake a Startup enthusiast commits?

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Ankit B.

Most of the founders or Startup enthusiasts are good in building products, creating innovative solutions, using technology, etc. Since, they are so excited about heir field of expertise they end up deciding, sometimes even building a solution first and then start finding the problem for which the solution can be a fit. This is prevalent in most of the Mobile or Web based solutions since techies often start building an application or a software without identifying the problem, researching on it, figuring out the various possible solutions and customers, identifying the exact pain point and then jumping on the solution. The right way to do it is to go from a defined problem to a defined solution.

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